"Don’t air purge. It’s bad for our ozone layer and dangerous. Invest in or build a closed loop extractor. Or better yet, let the big boys do all the hard work and buy your concentrate at a dispensary. You’ll still save big over what they charge for vape cartridges. "
"The problem is that the famous decarb time/temp graph is based on a hexane extract on a hot plate and not bud/leaf. It takes more time for the heat to penetrate the more intact trichomes that are somewhat more insulated by plant cellulose and air. Also, oil doesn’t extract cannabinoids as effectively as solvents, so you might want to try a doing a double extraction using about half the quantity of fresh oil on the second run. I’d give it another 30 then combine the oil batches. "